Sandvik Coromant Introduces GC1240
Sandvik Coromant recently launched GC1240, the next-generation indexable milling grade engineered to overcome the toughest stainless steel machining challenges and deliver unwavering performance.
Powered by an innovative nano-multilayer PVD (physical vapor deposition) coating produced with Sandvik Coromant's unique Zertivo coating process technology, GC1240 resists thermal cracking and abrasive wear. Its stable edge line ensures secure machining with predictable tool life, from light roughing to finishing in both wet and dry conditions.
The continuous development of Zertivo amplifies GC1240’s capabilities. The advanced nano-multilayer coating, a combination of TiAlN and TiSiN, delivers a rare synergy of edge line toughness and wear resistance, typically considered a trade-off in conventional grades.
“GC1240 is capable of machining stainless steel at higher cutting speeds in dry conditions — in some cases up to 20% higher than wet machining,” said Wayne Mayson, global product application manager for grades at Sandvik Coromant. “This enables lower energy consumption, more parts produced in less time and reduced coolant usage, contributing to reduced CO2 emissions and improved sustainability.”
Designed for reliability, grade GC1240 withstands harsh machining environments. Its ability to run dry makes it an ideal choice for applications where coolant reduction or elimination is required.
Grade GC1240 is the recommended grade for light roughing to finishing of stainless steels using strong, positive and sharp geometries. It also performs effectively in heat-resistant super alloys and titanium at recommended cutting speeds.
In total, 13 Sandvik Coromant CoroMill families are now available with grade GC1240, including 77 individual articles.
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